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Quizlet was founded in 2005 by Andrew Sutherland as a studying tool to aid in memorization for his French class, which he claimed to have "aced". [ 6 ] [ 7 ] [ 8 ] Quizlet's blog, written mostly by Andrew in the earlier days of the company, claims it had reached 50,000 registered users in 252 days online. [ 9 ]
Donald Thomas Campbell (November 20, 1916 – May 6, 1996) was an American social scientist. He is noted for his work in methodology . He coined the term evolutionary epistemology and developed a selectionist theory of human creativity .
In Leitner's original method published in his book So lernt man Lernen (How to learn to learn), the schedule of repetition was governed by the size of the five partitions in the learning box, which were 1, 2, 5, 8, and 14 centimeters, respectively. The learner only reviewed some of the cards in a section whenever it became full, subsequently ...
The cells in the human body are not outnumbered 10 to 1 by microorganisms. The 10 to 1 ratio was an estimate made in 1972; current estimates put the ratio at either 3 to 1 or 1.3 to 1. [299] The total length of capillaries in the human body is not 100,000 km.
William Cecil Campbell FRS [1] (born 28 June 1930) is an Irish-American microbiologist known for his work in discovering a novel therapy against infections caused by roundworms, for which he was jointly awarded the 2015 Nobel Prize in Physiology or Medicine. [2]
Biology is the scientific study of life. [1] [2] [3] It is a natural science with a broad scope but has several unifying themes that tie it together as a single, coherent field. [1] [2] [3] For instance, all organisms are composed of at least one cell that processes hereditary information encoded in genes, which
The genotypic ratio is 1: 2 : 1, and the phenotypic ratio is 3: 1. In the pea plant example, the capital "B" represents the dominant allele for purple blossom and lowercase "b" represents the recessive allele for white blossom. The pistil plant and the pollen plant are both F 1-hybrids with genotype "B b". Each has one allele for purple and one ...
The mathematics of "improvement in fitness was described by Kleinman. [63] An empirical example of "improvement in fitness" is given by the Kishony Mega-plate experiment. [ 64 ] In this experiment, "improvement in fitness" depends on the number of replications of the particular variant for a new variant to appear that is capable of growing in ...